Template-free synthesis of novel flower-like MnCo2O4 hollow microspheres for application in supercapacitors

被引：111

作者：

Che, Hongwei ^{[1
]}

Liu, Aifeng ^{[1
]}

Mu, Jingbo ^{[1
]}

Wu, Chunxia ^{[1
]}

Zhang, Xiaoliang ^{[1
]}

机构：

[1] Hebei Univ Engn, Coll Equipment Mfg, Dept Composite Mat & Engn, Handan 056038, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Solvothermal method; Hollow; MnCo2O4; Supercapacitor; NANOWIRE ARRAYS; PERFORMANCE; ELECTRODES; NANOSHEETS; OXIDES; CO3O4; NI; CO;

D O I：

10.1016/j.ceramint.2015.10.041

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel flower-like MnCo2O4 hollow microspheres have been synthesized through a facile template-free solvothermal method combined with calcination. The as-synthesized flower-like MnCo2O4 hollow microspheres have a diameter of 3.0 mu m, and constructed by numerous loosely arraying nanoflakes with a thickness of 20 nm. Based on their unique flower-like and hollow structures, these flower-like MnCo2O4 hollow microspheres display a good capacitive behavior with a specific capacitance of 235.7 F g(-1) at a current density of 1.0 A g(-1) a good specific capacitance retention of 93.6% after 2000 continuous charge discharge cycles. The excellent capacitive properties and stability suggest that these flower-like MnCo2O4 hollow microspheres could be promising electroactive materials for supercapacitors. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2416 / 2424

页数：9

共 29 条

[1] Template-free approach to synthesize hierarchical porous nickel cobalt oxides for supercapacitors [J].

Chang, Jie ;

Sun, Jing ;

Xu, Chaohe ;

Xu, Huan ;

Gao, Lian .

NANOSCALE, 2012, 4 (21) :6786-6791

[2] Nickel- Cobalt Layered Double Hydroxide Nanosheets for High- performance Supercapacitor Electrode Materials [J].

Chen, Hao ;

Hu, Linfeng ;

Chen, Min ;

Yan, Yan ;

Wu, Limin .

ADVANCED FUNCTIONAL MATERIALS, 2014, 24 (07) :934-942

[3] Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes [J].

Chen, L. Y. ;

Hou, Y. ;

Kang, J. L. ;

Hirata, A. ;

Chen, M. W. .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (22) :8448-8455

[4] Supercapacitors Technical Requirements for New Applications [J].

Conte, M. .

FUEL CELLS, 2010, 10 (05) :806-818

[5]

Conway B.E., 1999, SUPERCAPACITORS SCI

[6] Hierarchical NiCo2O4 Nanosheets Grown on Ni Nanofoam as High-Performance Electrodes for Supercapacitors [J].

Gao, Guoxin ;

Wu, Hao Bin ;

Ding, Shujiang ;

Liu, Li-Min ;

Lou, Xiong Wen .

SMALL, 2015, 11 (07) :804-808

[7] Trisodium citrate assisted synthesis of hierarchical NiO nanospheres with improved supercapacitor performance [J].

Han, Dandan ;

Xu, Pengcheng ;

Jing, Xiaoyan ;

Wang, Jun ;

Yang, Piaoping ;

Shen, Qihui ;

Liu, Jingyuan ;

Song, Dalei ;

Gao, Zan ;

Zhang, Milin .

JOURNAL OF POWER SOURCES, 2013, 235 :45-53

[8]

Jayalakshmi M, 2008, INT J ELECTROCHEM SC, V3, P1196

[9] The specific capacitance of sol-gel synthesised spinel MnCo2O4 in an alkaline electrolyte [J].

Kong, Ling-Bin ;

Lu, Chao ;

Liu, Mao-Cheng ;

Luo, Yong-Chun ;

Kang, Long ;

Li, Xiaohong ;

Walsh, Frank C. .

ELECTROCHIMICA ACTA, 2014, 115 :22-27

[10] Characterization of MgCo2O4 as an electrode for high performance supercapacitors [J].

Krishnan, Syam G. ;

Reddy, M. V. ;

Harilal, Midhun ;

Vidyadharan, Baiju ;

Misnon, Izan Izwan ;

Ab Rahim, Mohd Hasbi ;

Ismail, Jamil ;

Jose, Rajan .

ELECTROCHIMICA ACTA, 2015, 161 :312-321

← 1 2 3 →